Side-head jointer for planing-machines.



c. w. H. BLoom; c. GQ OSTEMAN. SIDE, HEAD JOINTEB FOR PLNING' MAHINES.

Patented Nov. 24,

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CHARLES w. n. BLOOD, oF vvINTiraor,v AND oAnLG.`osTEMAN, OF DOROHFSTFR, MASSACHU- sET'rs, AssIGNoRs TosA. wooDs MACHINE COMPANY, oF BOSTON, MAssAonUsF'rTs.

SIDE-HEAD JOINTER FOR PLANING-MACHINES.

Specification of Letters Patent.

`Patented Nov. 24, 19.08.

Application filed April 18, 1908. Serial N o. 427,821.

To all whom 'it may concern: f

VBe it known that we, `CHAmaus W. I-I. BLOOD, a citizen of the United States, and resident of Winthrop, in the county of Suffolk and State of Massachusetts, and CARL G. OsTnMAN, a citizen of the United States and resident of Dorchester, in the county of Suffolk and State of Massachusetts, have invented an Improvement in Side-Head Jointers for Planing-Machines, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing" like parts. j 4 In matching flooring and the likeitis a common practice to inclinethe sidecut, out of the vertical., so that when two boards are joined togetherthey Will besure to make an absolutely tight joint Itheir top` edges. This necessitates under-,cutting or inclining the cutterhead or in `other words grinding the' cutterhead slightly 'conical,-a proceeding which has heretofore been more or'less diflicult and expensive. ,One reason for this has been due to the dificulty of getting the knives all true or in exact alinementwhen running at full speed soM that they will. not

produce any transverse markings inthe edges of the boards, but will produce a perfectly smooth cut.` Modernmachines are run at such a very high speed that even though all the knives in a cutter head be adjusted andV i sharpened so that they are even when Vnot running, theiredges will not aline or follow` in absolutely the same "plane or curve when under the influence ofthe high speed of the machine whenrunning.' `The result has been that a great deal of time has heretoforebeen commonly spent in truing the blades, and accordingly it is the purpose of our present in- I vention to provide` means for truing the on said slide way ismountedto move up andV down a stick.

We wish it understoodlthat our mechanism is not a sharpening device in the sense of grinding device, preferably an emery l serving to sharpen the individual knives, but

it is for truing knives that are already sharpened, e. for bringing their cutting' edges into such relation that when run at top speed the resulting cut will be smooth.

Our invention also contemplates various adjustments, etc., all of which will be more fully set forth in the course of the following description, reference being had to the accompanying drawings, in which we have shown a preferred embodiment of the invention.

In the drawings, Figure 1 is a top plan view of the device; Fig. 2 illustrates, partially diagrammatic, the manner of using the same, being a broken plan View in outline of a planer; Fig. 3 shows the device in front elevation, partially broken away, and exhib: iting its adjustment in dotted lines; Fig. 4 is a view thereof in edge elevation; and Fig. 5 is an end view of two Hoor boards illustrating the manner of inclining the edges of floor boards.

In Fig. 5 we have illustrated the common practice of the trade of beveling or inclining the edges of floor boards, two` floor boards 1, 2, being shown, having their edges 3, 4, inclined withreference to the vertical, so as to meet tightly .at 5. UsuallyV ioor boards are matched or planed bottom side up, as shown in Fig. 5.

In Fig.V 2 vwe haveindicated a planing Vmachine 'at 6 having a horizontal cutter 7 and usual opposite vertical cutterheads 8, 9, and have shown our truing device at 10, beingadapted to be removably secured in holes l1," 12. j i Referring to Figs. 1, 3 and 4, it will be seen that we provide a standard 13 having a base or foot 14, preferably provided with a pin 15 for entering the hole 11 and with `an opening 16 for receiving a securing bolt 17 to removably fasten the standard in rigid upright position on the bed of a planing machine. `This standard is slotted transversely at 18 at its upper end, and pivoted to its lower end at 19 is a guide bed or way or swinging-support 2O,` for receiving a sharpening device 21.` The swinging support 20 is herein shown as adjustably clamped by a set bolt 22 to the standard 13 in such position as may be desired, either truly vertical or swung to one side or the other. The pivot 19 extends transversely of the intersecting radius drawn thereto from the axis of the critter head, and the face of the standard 13 is in the plane of said radius so that when the guideway is turned or rocked on its pivot with relation to the bed of the machine, the path of the grinding device will be changed angularly to the axis of revolution of the cutter head as required for the proper truing of the knives. The grinding device may be of any usual or preferred kind, being herein shown as comprising a base or rest 23 moved up and down by sliding on the support or way 20, although it will be understood that our invention, in its broader aspects, includes any means .of moving the grinding device, of whatever kind the latter may be. On the base or rest 23 is mounted, herein shown as integrally, an obliquely extending barrel 211 containing a holder 25 in which is secured an emery stick 26 clamped immovably by screws 27, the barrel 241 being slotted at 28 to receive the heads of said screws, which serve to prevent the holder 25 from rotating in the barrel. The holder is adjusted by an adjusting screw 29 threaded thereinto at 30 and normally held in engagement with the outer end of the barrel 24 at 31 by a spring 32 in the hollow upper end of the barrel 211. The base or rest 23 has a dove-tail under side engaging correspondingly shaped side edges 33 of the support, as clearly shown in Fig. 1, so as to slide freely up and down thereon, and the support is provided with an ear 34 at its upper end in which is mounted a transverse screw 35 adapted to be turned by a crank 36 and engaging the Linder side of the base or rest 23 at 37, whereby the grinding device may be quickly reciprocated back and Jforth in an unvarying path as the cutterhead is rapidly rotating, thereby truing the knives thereof in absolutely true alinement with each other.

In use, when it is desired to true the side cutterhead, the truing device above described is put in position in relation to one cutterhead and then to the other, this being accomplished in an instant simply by placing v the pin 15 in the right hole in the bed of the machine and then inserting the bolt 17 through the alining holes 16 and 12. Then the support 20 is adjusted to the desired inclination by swinging it on its pivot 19 with relation to the standard 13 and tightening it by the bolt 22 operating in the arc shaped slot 18, swinging it to the left Fig. 3 in case it is desired to sharpen the cutters for an under cut and to the right in case it is desired to grind the cutters for producing an oppositely inclined edge to the floor board. Having adjusted the grinding device accurately to the desired inclination, the tool 26 is advanced according 4to the judgment of the operator, by turning the adjusting rod or screw 3l, which causes the emery holder 25 to slide forward in the barrel 24.-.

As already intimated, we wish it understood that our invention is not limited to the constructional details herein shown, as we believe that it is broadly new to provide a side cutterhead truing device for truing a rotating side cutterhead of a planing machine whether inclined to the vertical or not, and, accordingly we do not intend to limit our invention otherwise than as ex* pressed in the claims.

Having described our invention, what we claim as new and desire to secure by Letters Patent of the United States is;

1. In a planing machine, a bed, and a side cutter head and its knives, combined with a truing device to true the edges oi all of said knives when running at top speed to cut in one and the same line oblique to the axis ol revolution of said knives, provided with a vertically reciprocating grinding tool, and adjusting means including a longitlulinal guideway and a horizontal pivot 1to1' said guideway approximately parallel to the bed of the machine and extending in a direction transverse to an intersecting radius thereto from the cutter head to vary from the vertical the path oi movement ot said tool and to maintain said path unvarying when the tool is in operation.

2. ln a planing' machine, a bed, and a lside cutter head and its knives having its axis perpendicular to said bed, combined with a standard extending vertically at one side oi the cutter head with its face in the plane ol a radius thereto from said cutter head, said standard having a relatively immovable base extending at right angles to the staiulard, means for removably securing said base rigidly fiat on said bed, a longitudinal guideway carried by said standard, a grinding device mounted to slide lengthwise of said way in grinding proximity to the knives of the cutter head when the latter is rotating at top speed, and adjusting means to permit oi a rocking adjustment oi said guideway with relation to the bed of the machine in said plane of said standard for changing the angular path of the grinding device with relation to the axis of revolution of said cutter head.

3. A truing device for side cutterheads, comprising a vertical standard, a supporting member normally standing upright against said standard, means for tilting said supporting member obliquely with relation to the standard, a grinding device mounted to move up and down on said supporting member, and operating means to move said device on said member.

1. A truing device for side cutterheads, comprising a vertical standard, a supporting member normally standing upright against said standard, means for tilting said supporting member obliquely with relation to the standard, a grinding device mounted to slide up and down on said supporting member, and operating means to reciprocate said grinding device in its sliding movements.

5. A truing device for side cutterheads,

comprising a vertical standard, a supporting member normally standing upright against said standard, means for tilting said supporting member obliquely with relation to the standard, a grinding device mounted to slide up and down on said supporting member, and operating means to reciprocate said grinding device in its sliding movements, said grinding device including a barrel eX- tending transversely of the supporting member, a holder movable longitudinally in said barrel, means to clamp a grinding tool in said holder, and means to adjust the holder and tool with relation to the barrel.

6. A truing device for side cutterheads, comprising a vertical standard, asupporting member normally standing upright against said standard, means for tilting said supporting member obliquely with relation to the standard,`a grinding device mountedV to slide up and down on said supporting member, and operating means to reciprocate said grinding device in its sliding movements, said grinding device including a barrel eX- tending transversely of the supporting member, a holder movable longitudinallyV in said barrel, means to clamp a grinding tool in said holder, an adjusting rod extending from said holder externally of the barrel, and a tension spring tending to move the holder in opposition to said adjusting rod.

7. A truing device for a side cutterhead, comprising an upright standard, a supporting member, pivoted at its lower end against one vside of said standard and adjustably held against the standard at its upper end,

means to swing said member on said pivot with relation to said standard, a grinding device movably mounted on said member, and operating 'means to reciprocate said grinding device longitudinally of said member.

8. A truing device for a side cutterhead, comprising an upright standard havin at its lower end a laterally extending oot, means for clamping said foot immovably on the bed of va planing machine, a supporting member pivoted at its lower end against one side of said standard and adjustably held against the standard at its upper end, means to swing said member on said pivot with relation to said standard, a grinding device movably mounted on said member, and operating means to reciprocate said grinding device longitudinally of said member.

.9. A truing device for side cutterheads, comprising a vertical standard, a supporting member normally standing upright against said'standard, means for tilting said supporting member obliquely with relation to the standard, a grinding device having a base mounted to slide longitudinally of said supporting member, a holder mounted on said base, means for clamping a grinding tool in said holder, and operating means consisting of a slow-motion hand-screw for traversing said grinding device up and down on said supporting member.

In testimony whereof, we have signed our names to this specification, in the presence of two subscribing witnesses.

CHARLES W. H. BLOOD. CARL G. OSTEMAN. Witnesses:

HARRY E. BUMP, RALPH Lown, J r. 

